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Heptaldehyde structure
Chemical Name:
HEPTANAL;ENANTHAL;FEMA 2540;FEMA 2541;FEMA 2542;Oenanthal;Oenanthol;Enanthole;1-HEPTANAL;N-HEPTANAL
Molecular Formula:
Formula Weight:
MOL File:

Heptaldehyde Properties

Melting point:
−43 °C(lit.)
Boiling point:
153 °C(lit.)
0.817 g/mL at 25 °C(lit.)
vapor pressure 
3 hPa (20 °C)
refractive index 
n20/D 1.413(lit.)
Flash point:
95 °F
storage temp. 
Flammables area
1.25g/l insoluble
Powder, Crystals or Chunks
White to light yellow-beige
explosive limit
Water Solubility 
JECFA Number
Stable. May be light sensitive. Flammable - readily forms explosive mixtures with air. Incompatible with strong oxidizing agents, strong bases, strong reducing agents.
CAS DataBase Reference
111-71-7(CAS DataBase Reference)
NIST Chemistry Reference
EPA Substance Registry System
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  Xi,N
Risk Statements  10-36/37/38-38-50/53
Safety Statements  26-36-37-16-61-60
RIDADR  UN 3056 3/PG 3
WGK Germany  1
RTECS  MI6900000
Autoignition Temperature 250 °C
Hazard Note  Irritant
HS Code  2912 19 00
HazardClass  3
PackingGroup  III
Hazardous Substances Data 111-71-7(Hazardous Substances Data)
Toxicity LD50 orally in Rabbit: > 5000 mg/kg LD50 dermal Rabbit > 5000 mg/kg
Signal word: Warning
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H226 Flammable liquid and vapour Flammable liquids Category 3 Warning
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
H412 Harmful to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 3 P273, P501
Precautionary statements:
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P370+P378 In case of fire: Use … for extinction.
P405 Store locked up.
P403+P235 Store in a well-ventilated place. Keep cool.

Heptaldehyde price More Price(17)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich H2120 Heptaldehyde 95% 111-71-7 1l $105 2018-11-13 Buy
Sigma-Aldrich 61696 Heptaldehyde analytical standard 111-71-7 1ml $59.2 2018-11-13 Buy
TCI Chemical H0025 Heptanal >95.0%(GC) 111-71-7 25mL $16 2018-11-22 Buy
TCI Chemical H0025 Heptanal >95.0%(GC) 111-71-7 500mL $69 2018-11-22 Buy
Alfa Aesar B23830 Heptanal, 97% 111-71-7 100ml $24.1 2018-11-13 Buy

Heptaldehyde Chemical Properties,Uses,Production

Chemical Properties

colourless liquid


Labelled Heptanal. Bioconversion of heptanal to heptanol by Saccharomyces cerevisiae and effect of C source maltose.


Manufacture of 1-heptanol; ethyl oenanthate.

General Description

A colorless, oily liquid with a penetrating fruity odor. Insoluble in water and less dense than water. Hence floats on water. Flash point near 141°F. Used to make perfumes and pharmaceuticals.

Air & Water Reactions

Flammable. Insoluble in water.

Reactivity Profile

Heptaldehyde may undergo exothermic self-condensation or polymerization reactions in the presence of acids. May generate flammable and/or toxic gases with azo, diazo compounds, dithiocarbamates, nitrides, and strong reducing agents. Is readily oxidized to give heptanoic acid. Can react with air to give first peroxo acids, and ultimately heptanoic acid. These autoxidation reactions are activated by light, catalyzed by salts of transition metals, and are autocatalytic (catalyzed by the products of the reaction). The presence of stabilizers (antioxidants) retards autoxidation. Incompatible with strong oxidizers, bases and reducing agents.



Health Hazard

May cause toxic effects if inhaled or absorbed through skin. Inhalation or contact with material may irritate or burn skin and eyes. Fire will produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control or dilution water may cause pollution.

Fire Hazard

HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.

Purification Methods

Dry n-heptaldehyde with CaSO4 or Na2SO4 and fractionally distil it under reduced pressure. More extensive purification is by precipitation as the bisulfite compound (formed by adding the aldehyde to saturated aqueous NaHSO3) which is filtered off and recrystallised from hot H2O. The crystals, after being filtered and washed well with H2O, are hydrolysed by adding 700mL of aqueous Na2CO3 (12.5% w/w of anhydrous Na2CO3) per 100g of aldehyde. The aldehyde is then steam distilled off, separated, dried with CuSO4 and distilled under reduced pressure in a slow stream of nitrogen. [McNesby & Davis J Am Chem Soc 76 2148 1954, Beilstein 1 H 695, 1 I 357, 1 II 750, 1 III 2844, 1 IV 3314.]

Heptaldehyde Preparation Products And Raw materials

Raw materials

Preparation Products

Heptaldehyde Suppliers

Global( 163)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Henan DaKen Chemical CO.,LTD.
+86-371-55531817 CHINA 22043 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693 CHINA 20786 55
Mainchem Co., Ltd.
+86-0592-6210733 CHINA 32651 55
Chemwill Asia Co.,Ltd.
86-21-51861608;;; CHINA 24118 58
Hubei Jusheng Technology Co.,Ltd.
86-188-71490254 CHINA 20243 58
J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833
+86-10-82849933; China 96815 76
Meryer (Shanghai) Chemical Technology Co., Ltd. +86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-62670440(Beijing)
+86-(0)21-61259102(Shanghai) +86-(0)755-86170066(ShenZhen) +86-(0)10-88580358(Beijing) China 40395 62
3B Pharmachem (Wuhan) International Co.,Ltd. 86-21-50328103 * 801、802、803、804 Mobile:18930552037
86-21-50328109 China 15926 69
Alfa Aesar 400-610-6006; 021-67582000
021-67582001/03/05 China 30291 84
TCI (Shanghai) Development Co., Ltd. 021-67121386 / 800-988-0390
021-67121385 China 24648 81

Heptaldehyde Spectrum

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